A5087156611- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Nuclear physics research studies
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Black Holes and Theoretical Physics
- Nuclear Physics and Applications
- Distributed and Parallel Computing Systems
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Atomic and Molecular Physics
- Nuclear reactor physics and engineering
- Superconducting Materials and Applications
- Advanced NMR Techniques and Applications
- Radiation Therapy and Dosimetry
- Quantum, superfluid, helium dynamics
- Medical Imaging Techniques and Applications
- Neural Networks and Applications
- Pulsars and Gravitational Waves Research
The University of Tokyo
2016-2025
Northern Illinois University
2020-2024
Rutherford Appleton Laboratory
2016-2024
New York University
2024
Kōchi University
1998-2024
Institute for High Energy Physics
2023-2024
Institute of Science and Technology
2023-2024
Atlas Scientific (United States)
2024
A. Alikhanyan National Laboratory
2024
SR Research (Canada)
2024
We report, for the first time, long-awaited detection of diffuse gamma rays with energies between 100 TeV and 1 PeV in Galactic disk. Particularly, all above 398 are observed apart from known gamma-ray sources compatible expectations hadronic emission scenario which originate decay $π^0$'s produced through interaction protons interstellar medium Galaxy. This is strong evidence that cosmic accelerated beyond our Galaxy spread over
Two unusually-high-multiplicity interactions of high-energy heavy nuclei are observed in a balloon-borne emulsion chamber: A Si + Ag Br event (4 TeV/nucleon) and Ca C (100 TeV/nucleon), with 1015 760 charged particles, respectively. The multiplicities rapidity distributions favor the multichain model but not wounded-nucleon superposition model. high average ${P}_{T}$ (550-700 MeV/c) fluctuations events readily understood terms any models.
We present an updated all-particle energy spectrum of primary cosmic rays in a wide range from 1014 to 1017 eV using 5.5 × 107 events collected 2000 November through 2004 October by the Tibet-III air-shower array located 4300 m above sea level (an atmospheric depth 606 g cm−2). The size exhibits sharp knee at corresponding around 4 PeV. This work uses increased statistics and new simulation calculations for analysis. discuss our extensive Monte Carlo model dependencies involved final result,...
We present studies of quantum algorithms exploiting machine learning to classify events interest from background events, one the most representative applications in high-energy physics. focus on variational approach learn properties input data and evaluate performance event classification using both simulators computing devices. Comparison with standard multi-variate techniques based a boosted-decision tree deep neural network classical computers shows that algorithm has comparable at...
The angular distributions of the cross section, proton analyzing power, and all polarization transfer coefficients $\stackrel{\ensuremath{\rightarrow}}{p}d$ elastic scattering were measured at 250 MeV. range center-of-mass angles was $10\ifmmode^\circ\else\textdegree\fi{}--165\ifmmode^\circ\else\textdegree\fi{}$ for section about $10\ifmmode^\circ\else\textdegree\fi{}--95\ifmmode^\circ\else\textdegree\fi{}$ coefficients. These are first measurements a complete set observables intermediate...
This paper was published online on 20 May 2005 without several of the authors’ corrections incorporated. Equation (13) has been replaced. The captions Figs. 16–18 have also Typographical errors pages 4, 6, 14, 15, 18, 19, 22, and 24 all corrected. corrected as 8 June 2005. text is correct in printed version journal.Received 6 2005DOI:https://doi.org/10.1103/PhysRevC.71.069902©2005 American Physical Society
Carbonyl sulfide (COS) is an atmospheric trace gas leading to sulfate aerosol formation, thereby participating in the global radiation balance and ozone chemistry, but its biological sinks are not well understood. Thiobacillus thioparus strain THI115 can grow on thiocyanate (SCN(-)) as sole energy source. Previously, we showed that SCN(-) first converted COS by hydrolase T. THI115. In present work, purified, characterized, determined crystal structure of carbonyl (COSase), which responsible...
Double differential cross sections between 0°–12° were measured for the 90Zr(n, p) reaction at 293 MeV over a wide excitation energy range of 0–70 MeV. A multipole decomposition technique was applied to present data as well previously obtained 90Zr(p, n) extract Gamow–Teller (GT) component from continuum. The GT quenching factor Q derived by using total strengths. result is Q=0.88±0.06, not including an overall normalization uncertainty in unit section 16%.
Three precise measurements for elastic $pd$ scattering at $135\text{ }\text{ }\mathrm{MeV}/A$ have been performed with the three different experimental setups. The cross sections are described well by theoretical predictions based on modern nucleon-nucleon forces combined three-nucleon forces. Relativistic Faddeev calculations show that relativistic effects restricted to backward angles. This result supports two recently reported RIKEN and contradicts KVI data.
The differential cross sections and vector analyzing powers for nd elastic scattering at En=248 MeV were measured 10°–180° in the center-of-mass (c.m.) system. To cover wide angular range, experiments performed separately by using two different setups forward backward angles. data are compared with theoretical results based on Faddeev calculations realistic nucleon-nucleon (NN) forces such as AV18, CD Bonn, Nijmegen I II, their combinations three-nucleon (3NFs), Tucson-Melbourne 99 (TM99),...
The deuteron to proton polarization transfer coefficients for the $d$--$p$ elastic scattering were precisely measured with an incoming energy of 135 MeV/u at RIKEN Accelerator Research Facility. data are compared theoretical predictions based on exact solutions three-nucleon Faddeev equations high--precision nucleon--nucleon forces combined different (3NFs), representing current, most popular models: $2\pi$-exchange Tucson-Melbourne model, a modification thereof closer chiral symmetry...
We present data on the inclusive scattering of polarized electrons from a 3He target at energies 0.862 to 5.06 GeV, obtained angle 15.5°. Our include measurements quasielastic peak, through nucleon resonance region, and beyond, were used determine virtual photon cross-section difference σ1/2−σ3/2. extract extended Gerasimov-Drell-Hearn integral for neutron in range four-momentum transfer squared Q2 0.1–0.9 GeV2.Received 15 May 2002DOI:https://doi.org/10.1103/PhysRevLett.89.242301©2002...
We report the results of first-time test local hidden variable theories (Bell-Clauser-Horne-Shimony-Holt) involving strongly interacting pairs massive spin $1/2$ hadrons from decay short-lived ($\ensuremath{\tau}<{10}^{\ensuremath{-}21}\mathrm{sec}$) $^{2}\mathrm{He}$ spin-singlet state, populated in nuclear reaction $^{2}\mathrm{H}+^{1}\mathrm{H}\ensuremath{\rightarrow}^{2}\mathrm{He}+n$. The novel features this experiment are (a) use an ``event-ready'' detector nearly 100% efficiency...
We report measurements of cross sections and analyzing powers for reaction angles ${\ensuremath{\theta}}_{\mathrm{lab}}={0.0}^{\ensuremath{\circ}}$--${10.0}^{\ensuremath{\circ}}$ complete sets polarization transfer observables induced polarizations at ${\ensuremath{\theta}}_{\mathrm{lab}}={0.0}^{\ensuremath{\circ}}$--${7.0}^{\ensuremath{\circ}}$ the ${}^{208}\mathrm{Pb}(\stackrel{P\vec}{p},\stackrel{P\vec}{n})$ a bombarding energy ${T}_{p}=296$ MeV. A multipole decomposition technique was...
Energy spectra of protons and helium nuclei in the primary cosmic rays were measured above 1 TeV a series balloon flights emulsion chambers. Differential may be represented by power laws indices -2.81\ifmmode\pm\else\textpm\fi{}0.13 -2.83\ifmmode\pm\else\textpm\fi{}0.20 for He, respectively. No index change was observed either species over energy ranges 5-500 2-50 TeV/nucleon He. Intensities consistent with extrapolations previously published data below TeV/nucleon.
Neutron-rich Se88,90,92,94 isotopes were studied via in-beam γ-ray spectroscopy after nucleon removal reactions at intermediate energies the Radioactive Isotope Beam Factory. Based on γ−γ coincidence analysis, low-lying excitation level schemes are proposed for these nuclei, including 21+, 41+ states and 22+ remarkably low energies. The states, along with other features, indicate triaxiality in nuclei. experimental results good overall agreement self-consistent beyond-mean-field calculations...
We report observations of gamma-ray emissions with energies in the 100 TeV energy region from Cygnus our Galaxy. Two sources are significantly detected directions OB1 and OB2 associations. Based on their positional coincidences, we associate one a pulsar PSR J2032+4127 other mainly wind nebula PWN G75.2+0.1 moving away its original birthplace situated around centroid observed emission. This work would stimulate further studies particle acceleration mechanisms at these sources.
The ability to degrade carbonyl sulfide (COS) was confirmed in seven bacterial strains that were isolated from soil, without the addition of COS. Comparative 16S rRNA gene sequence analysis indicated these isolates belonged genera Mycobacterium, Williamsia and Cupriavidus. For example, Mycobacterium sp. strain THI401, grown on PYG agar medium, able an initial level 30 parts per million by volume COS within 1 h, while 60 % decreased abiotic conversion h. Considering natural flux between soil...
Electroexcitation of $^{16}\mathrm{O}$ has been measured. The strength for the $E2$ (or $E0$) resonances were extracted from longitudinal form factors. In region 20-30-MeV excitation exhausts approximately 20% sum rule an interpretation, while in below 20 MeV 43% same rule. transverse factor is compared with calculations using both one-particle, one-hole and generalized Goldhaber-Teller models.
Gamow-Teller (GT) unit cross sections, ${\stackrel{\ifmmode \hat{}\else \^{}\fi{}}{\ensuremath{\sigma}}}_{\mathrm{GT}}$, are obtained at 198 and 297 MeV by measuring the double differential sections ${0}^{\ifmmode^\circ\else\textdegree\fi{}}$ for $(p,n)$ reaction on $^{58}\mathrm{Ni}$, $^{70}\mathrm{Zn}$, $^{114}\mathrm{Cd}$, $^{118}\mathrm{Sn}$, $^{120}\mathrm{Sn}$. The mass dependence of \^{}\fi{}}{\ensuremath{\sigma}}}_{\mathrm{GT}}$ ratio to Fermi section,...